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annotate Jint.Runtime/VM/Box.cs @ 4:1ae5b10f7a10

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Code cleanup, minor refactoring
author cin
date Sun, 27 Oct 2013 21:20:59 +0400
parents aced2ae9957f
children cb13da6e3349
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Text;
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5 using Jint.Runtime.VM.OpCodes;
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7 namespace Jint.Runtime.VM {
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8 class Box<T>: AbstractBox, IGettter<T>, ISetter<T> {
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10 public T holdingValue;
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11 object[] m_impl;
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12 RuntimeContext m_runtime;
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13
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14 public Box(T value, RuntimeContext runtime): base(typeof(T)) {
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15 if (runtime == null)
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16 throw new ArgumentNullException("runtime");
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17
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18 holdingValue = value;
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19 m_runtime = runtime;
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20 }
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21
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22 object[] Impl {
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23 get {
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24 if (m_impl == null)
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25 m_impl = m_runtime.GetImpl(typeof(T));
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26 return m_impl;
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27 }
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28 }
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30 public T Get() {
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31 return holdingValue;
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32 }
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34 public void Set(T value) {
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35 holdingValue = value;
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36 }
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38 public override void InvokeBinaryOperation(Codes code, int arg2, int dest, Frame frame) {
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39 var op = (BinaryOperation<T>)Impl[(int)code];
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40 frame.SetValue(dest, op(holdingValue, frame.GetValue<T>(arg2)));
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41 }
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43 public override void InvokeUnaryOperation(Codes code, int dest, Frame frame) {
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44 var op = (UnaryOperation<T>)Impl[(int)code];
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45 frame.SetValue(dest, op(holdingValue));
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46 }
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47
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48 public override void InvokeCompareOperation(int arg2, int dest, Frame frame) {
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49 var op = (CompareOperation<T>)Impl[(int)Codes.Cmp];
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50 frame.SetValue(dest, op(holdingValue, frame.GetValue<T>(arg2)));
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51 }
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52
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53 public override void InvokeEqualityOperation(int arg2, int dest, Frame frame) {
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54 var op = (EqualityOperation<T>)Impl[(int)Codes.Cmp];
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55 frame.SetValue(dest, op(holdingValue, frame.GetValue<T>(arg2)));
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56 }
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57 }
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58 }